:root{
  --reto-blue:#042f63;
  --reto-blue-2:#0b5fa5;
  --reto-light:#eef6ff;
  --reto-border:#cddbea;
  --reto-text:#062b57;
  --reto-muted:#60718c;
  --reto-card:#ffffff;
  --reto-green:#2f9d58;
  --reto-purple:#8b48c7;
  --reto-orange:#d9871f;
  --reto-red:#d3422f;
  --reto-shadow:0 18px 45px rgba(4,47,99,.14);
}

.retos-home-section{background:linear-gradient(135deg,#f7fbff 0%,#edf6ff 50%,#fff8eb 100%);padding:72px 20px;}
.retos-home-wrap{max-width:1180px;margin:0 auto;}
.retos-home-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:32px;}
.retos-home-card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--reto-border);border-radius:28px;padding:34px;box-shadow:var(--reto-shadow);min-height:310px;display:flex;flex-direction:column;justify-content:space-between;}
.retos-home-card:after{content:"";position:absolute;right:-40px;top:-42px;width:150px;height:150px;border-radius:999px;background:rgba(255,183,53,.20);}
.retos-home-card.info:after{background:rgba(12,95,165,.16)}
.retos-home-icon{width:68px;height:68px;border-radius:22px;background:linear-gradient(135deg,var(--reto-blue),var(--reto-blue-2));display:grid;place-items:center;color:#fff;margin-bottom:22px;}
.retos-home-icon svg{width:34px;height:34px;}
.retos-home-card h3{font-size:clamp(1.7rem,3vw,2.45rem);color:var(--reto-text);margin:0 0 14px;line-height:1.05;}
.retos-home-card p{color:#536784;line-height:1.75;font-size:1.02rem;max-width:560px;margin:0 0 22px;}
.retos-tags{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px;}
.retos-tags span{background:#f1f6fc;color:#07366b;border-radius:999px;padding:9px 14px;font-weight:800;font-size:.9rem;}
.retos-home-btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;background:linear-gradient(135deg,var(--reto-blue),var(--reto-blue-2));color:#fff;text-decoration:none;font-weight:900;padding:15px 24px;box-shadow:0 14px 26px rgba(4,47,99,.20);}
.retos-home-btn:hover{transform:translateY(-1px);filter:brightness(1.05);}

.retos-page{background:linear-gradient(135deg,#f7fbff 0%,#edf6ff 58%,#fffaf0 100%);min-height:100vh;padding:42px 18px 70px;}
.retos-page-wrap{max-width:1480px;margin:0 auto;}
.retos-hero{text-align:center;margin-bottom:26px;}
.retos-kicker{display:inline-flex;align-items:center;justify-content:center;border:1px solid #f4bf79;background:#fff2dc;color:#ef6c00;font-weight:900;letter-spacing:.04em;border-radius:999px;padding:7px 14px;font-size:.78rem;text-transform:uppercase;margin-bottom:12px;}
.retos-hero h1{color:var(--reto-text);font-size:clamp(2rem,4vw,3.4rem);line-height:1;margin:0 0 10px;}
.retos-hero p{color:#526885;margin:0 auto;max-width:760px;line-height:1.6;}

/* Botón unificado para volver al Centro de Entrenamiento Académico */
.retos-hero-with-back{position:relative;padding-right:132px;}
.training-back-button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:0 13px;border:1px solid #c5dcec;border-radius:10px;background:#fff;color:#164f84;text-decoration:none;font-size:.82rem;font-weight:900;line-height:1;white-space:nowrap;box-shadow:0 3px 8px rgba(7,61,112,.06);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;}
.training-back-button svg{width:17px;height:17px;flex:0 0 17px;}
.training-back-button:hover,.training-back-button:focus-visible{transform:translateY(-1px);border-color:#82b2d8;box-shadow:0 7px 15px rgba(7,61,112,.13);outline:0;}
.retos-hero-with-back .training-back-button{position:absolute;top:0;right:0;}
.avanzo-page-head .training-back-button{position:relative;z-index:1;}
@media (max-width:760px){.retos-hero-with-back{padding-right:0;}.retos-hero-with-back .training-back-button{position:static;margin:13px auto 0;}.avanzo-page-head .training-back-button{width:100%;}.training-back-button{min-height:40px;}}
.retos-panel{background:#fff;border:1px solid var(--reto-border);border-radius:26px;box-shadow:var(--reto-shadow);overflow:hidden;}
.retos-panel-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;align-items:end;padding:24px 26px;border-bottom:1px solid var(--reto-border);background:rgba(255,255,255,.86);}
.retos-panel-title h2{color:var(--reto-text);font-size:clamp(1.45rem,2.4vw,2.35rem);line-height:1.08;margin:0 0 6px;}
.retos-panel-title p{color:var(--reto-muted);margin:0;font-weight:700;}
.retos-filters{display:grid;grid-template-columns:repeat(3, minmax(170px, 1fr));gap:12px;min-width:min(720px,100%);}
.retos-field label{display:block;color:var(--reto-text);font-weight:900;font-size:.84rem;margin:0 0 6px;}
.retos-field select{width:100%;border:1px solid var(--reto-border);border-radius:14px;padding:12px 14px;background:#fff;color:#0a2c53;font-weight:800;outline:none;}
.retos-field select:focus{border-color:#0b5fa5;box-shadow:0 0 0 3px rgba(11,95,165,.12);}
.retos-challenge-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px;}
.retos-pill{display:inline-flex;align-items:center;border-radius:999px;background:#f1f6fc;color:#07366b;font-weight:900;padding:8px 12px;font-size:.82rem;}
.retos-body{padding:26px;}
.retos-alert{border-radius:16px;padding:13px 16px;margin:16px 0 0;font-weight:800;display:none;}
.retos-alert.show{display:block;}
.retos-alert.ok{background:#e6f8ec;color:#116534;}
.retos-alert.error{background:#ffeae7;color:#9b271a;}
.retos-alert.info{background:#edf6ff;color:#173d6b;}
.retos-hidden{display:none!important;}

/* Matemática */
.math-layout{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(360px,.75fr);gap:24px;align-items:start;}
.math-image-card{background:#f6faff;border:1px solid var(--reto-border);border-radius:22px;padding:16px;}
.math-image-card img{display:block;width:100%;height:auto;max-height:760px;object-fit:contain;background:#fff;border-radius:16px;border:1px solid #edf2f8;}
.math-content{background:#fff;border:1px solid var(--reto-border);border-radius:22px;padding:22px;}
.math-content h3{font-size:1.55rem;line-height:1.15;color:var(--reto-text);margin:0 0 8px;}
.math-source{color:var(--reto-muted);font-size:.9rem;font-weight:800;margin-bottom:18px;}
.math-instructions{color:#08284b;line-height:1.7;font-size:1rem;border-top:1px solid var(--reto-border);padding-top:16px;margin-top:16px;}
.math-answer-row{display:flex;gap:12px;align-items:center;margin-top:20px;flex-wrap:wrap;}
.math-answer-row input{flex:1 1 240px;min-width:0;border:1px solid var(--reto-border);border-radius:14px;padding:14px 16px;outline:none;font-size:1rem;}
.math-answer-row input:focus{border-color:#0b5fa5;box-shadow:0 0 0 3px rgba(11,95,165,.12);}
.retos-btn{border:1px solid var(--reto-border);background:#fff;color:var(--reto-text);border-radius:999px;padding:13px 18px;font-weight:900;cursor:pointer;transition:.18s ease;}
.retos-btn:hover{transform:translateY(-1px);box-shadow:0 10px 20px rgba(4,47,99,.09);}
.retos-btn.primary{background:linear-gradient(135deg,var(--reto-blue),var(--reto-blue-2));color:#fff;border-color:transparent;box-shadow:0 14px 26px rgba(4,47,99,.20);}
.retos-btn.danger{background:#fff0ee;color:#a52b1c;border-color:#f2b8b0;}
.retos-reveal{margin-top:14px;border:1px solid var(--reto-border);background:#f8fbff;border-radius:16px;padding:14px 16px;color:#173d6b;line-height:1.55;display:none;}
.retos-reveal.show{display:block;}
.manual-note{background:#fff8e6;border:1px solid #f6d391;color:#714a05;border-radius:16px;padding:14px 16px;font-weight:800;line-height:1.5;margin-top:20px;}

/* Informática Blockly */
.osi-layout{display:grid;grid-template-columns:360px minmax(0,1fr);gap:22px;align-items:stretch;min-height:720px;}
.osi-left{display:flex;flex-direction:column;gap:16px;min-width:0;}
.osi-board-card,.osi-info-card{background:#fff;border:1px solid var(--reto-border);border-radius:20px;padding:16px;}
.osi-board-title{font-weight:900;color:var(--reto-text);margin-bottom:12px;display:flex;justify-content:space-between;gap:10px;}
.osi-board{display:grid;gap:5px;background:#edf5ff;border:1px solid #c7d9ea;border-radius:18px;padding:10px;aspect-ratio:1/1;max-width:100%;}
.osi-cell{position:relative;background:#fff;border:1px solid #bcd3e9;border-radius:8px;display:grid;place-items:center;font-size:1.25rem;min-width:0;min-height:0;}
.osi-cell.obstacle{background:#334760;border-color:#334760;box-shadow:inset 0 0 0 1px rgba(255,255,255,.13);}
.osi-cell.goal{background:#dff8dd;border-color:#72c178;}
.osi-cell.path{background:#fff7c5;border-color:#f0d566;}
.osi-cell.target{background:#fff2c8;border-color:#e8b642;}
.osi-robot{width:78%;height:78%;display:grid;place-items:center;border-radius:50%;background:linear-gradient(135deg,#084984,#0a7cca);color:#fff;font-size:1rem;box-shadow:0 6px 12px rgba(4,47,99,.25);transition:transform .18s ease;}
.osi-goal{font-size:1.1rem;}
.osi-stone{font-size:1rem;}
.osi-cone{font-size:1rem;}
.osi-info-card p{color:#173d6b;line-height:1.55;font-weight:700;margin:0 0 12px;font-size:.96rem;}
.osi-counter{display:inline-flex;border-radius:999px;background:#edf6ff;color:#05315f;font-weight:900;padding:10px 14px;}
.blockly-wrap{display:grid;grid-template-columns:minmax(0,1fr);background:#fff;border:1px solid var(--reto-border);border-radius:20px;min-width:0;overflow:hidden;}
.blockly-topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border-bottom:1px solid var(--reto-border);background:#f8fbff;}
.blockly-topbar h3{margin:0;color:var(--reto-text);font-size:1.1rem;}
#blocklyWorkspace{height:610px;width:100%;min-width:0;}
.osi-actions{display:flex;gap:10px;flex-wrap:wrap;padding:14px 16px;border-top:1px solid var(--reto-border);background:#fff;}
.osi-modal{position:fixed;inset:0;background:rgba(4,20,39,.48);display:none;align-items:center;justify-content:center;z-index:9999;padding:20px;}
.osi-modal.show{display:flex;}
.osi-modal-card{background:#fff;border-radius:22px;box-shadow:0 24px 70px rgba(0,0,0,.24);max-width:760px;width:100%;padding:24px;border:1px solid var(--reto-border);}
.osi-modal-card h3{font-size:2rem;line-height:1.05;color:var(--reto-text);margin:0 0 12px;}
.osi-code{background:#f3f6fa;border:1px solid #dce5ef;border-radius:16px;padding:16px;overflow:auto;color:#102b49;font-family:Consolas,Monaco,'Courier New',monospace;white-space:pre-wrap;line-height:1.5;margin:14px 0;}

@media (max-width:1100px){
  .retos-panel-head{grid-template-columns:1fr;align-items:start;}
  .retos-filters{min-width:0;grid-template-columns:repeat(3,minmax(0,1fr));}
  .math-layout{grid-template-columns:1fr;}
  .osi-layout{grid-template-columns:1fr;}
  .osi-left{display:grid;grid-template-columns:minmax(280px,360px) minmax(0,1fr);}
}
@media (max-width:780px){
  .retos-home-grid{grid-template-columns:1fr;}
  .retos-page{padding:24px 12px 48px;}
  .retos-panel-head,.retos-body{padding:18px;}
  .retos-filters{grid-template-columns:1fr;}
  .math-answer-row{flex-direction:column;align-items:stretch;}
  .math-answer-row input{flex:auto;}
  .osi-left{display:flex;}
  #blocklyWorkspace{height:520px;}
  .retos-home-card{padding:26px;}
}

/* Retos Informáticos v8 - Blockly real en 3 cards */
.retos-wide-wrap{max-width:1780px;}
.retos-hero-compact{margin-bottom:18px;}
.retos-hero-compact h1{font-size:clamp(1.9rem,3.4vw,3rem);}
.retos-hero-compact p{max-width:880px;}
.retos-kicker.blue{border-color:#b7d9ff;background:#eaf5ff;color:#075896;}
.retos-panel-osi{border-radius:22px;}
.retos-panel-head-compact{align-items:start;padding:20px 24px;}
.osi-layout-v8{display:grid;grid-template-columns:minmax(300px,360px) minmax(640px,1fr) minmax(300px,360px);gap:18px;align-items:stretch;min-height:760px;padding:20px;background:#f4f8fd;}
.osi-card{background:#fff;border:1px solid var(--reto-border);border-radius:18px;box-shadow:0 12px 26px rgba(4,47,99,.06);min-width:0;overflow:hidden;}
.osi-card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 16px;border-bottom:1px solid var(--reto-border);background:#fbfdff;}
.osi-card-head h3{margin:0;color:var(--reto-text);font-size:1.05rem;line-height:1.2;font-weight:900;}
.osi-board-panel{display:flex;flex-direction:column;}
.osi-board-panel .osi-board{margin:16px;width:calc(100% - 32px);}
.osi-board{aspect-ratio:1/1;max-height:420px;}
.osi-board .osi-cell{border-radius:7px;}
.osi-info-card.clean{border:none;border-top:1px solid var(--reto-border);border-radius:0;background:#fff;padding:16px;margin-top:auto;}
.osi-info-card.clean p{font-size:1rem;line-height:1.6;margin-bottom:14px;}
.blockly-wrap-v8{display:flex;flex-direction:column;background:#fff;border:1px solid var(--reto-border);border-radius:18px;box-shadow:0 12px 26px rgba(4,47,99,.06);overflow:hidden;min-width:0;}
.blockly-wrap-v8 .blockly-topbar{flex:0 0 auto;}
.blockly-actions-top{display:flex;align-items:center;gap:8px;}
.blockly-wrap-v8 #blocklyWorkspace{height:640px;min-height:560px;width:100%;flex:1 1 auto;}
.blockly-wrap-v8 .osi-actions{flex:0 0 auto;align-items:center;}
.osi-solution-panel{display:flex;flex-direction:column;}
.osi-solution-panel .solution-intro{margin:0;padding:16px;color:#173d6b;line-height:1.6;font-weight:700;border-bottom:1px solid var(--reto-border);}
.osi-solution-panel .solution-code{margin:16px;min-height:360px;max-height:520px;white-space:pre-wrap;overflow:auto;font-size:.94rem;background:#f6f9fd;}
.solution-note{margin:0 16px 16px;background:#edf6ff;color:#0a3769;border-radius:14px;padding:12px 14px;line-height:1.5;font-weight:800;}
.osi-modal-card #osi-modal-compare{background:#edf6ff;color:#0a3769;border-radius:14px;padding:12px 14px;font-weight:800;line-height:1.5;}
.osi-cell.path{background:#fff8cb;border-color:#f3d66a;}
.osi-cell.target{background:#fff1bd;border-color:#e2b43b;}
.osi-cell.goal{background:#dbf9df;border-color:#5abb68;}
.osi-stone{color:#075896;font-weight:900;text-shadow:0 1px 0 #fff;}
.osi-cone{color:#e38300;font-weight:900;}
.osi-goal{color:#126b2d;font-weight:900;}
.osi-robot{font-weight:900;}

@media (min-width:1500px){
  .osi-layout-v8{grid-template-columns:380px minmax(760px,1fr) 390px;gap:22px;padding:24px;}
  .blockly-wrap-v8 #blocklyWorkspace{height:700px;}
}
@media (max-width:1280px){
  .osi-layout-v8{grid-template-columns:320px minmax(520px,1fr);}
  .osi-solution-panel{grid-column:1 / -1;}
  .osi-solution-panel .solution-code{min-height:180px;max-height:320px;}
}
@media (max-width:900px){
  .osi-layout-v8{grid-template-columns:1fr;min-height:0;padding:14px;}
  .blockly-wrap-v8 #blocklyWorkspace{height:560px;min-height:500px;}
  .osi-board{max-height:none;}
  .retos-panel-head-compact{padding:18px;}
}
@media (max-width:620px){
  .retos-page-osi{padding-left:8px;padding-right:8px;}
  .blockly-wrap-v8 #blocklyWorkspace{height:520px;min-height:480px;}
  .osi-actions{gap:8px;}
  .osi-actions .retos-btn{width:100%;}
  .blockly-actions-top .retos-btn{padding:10px 12px;font-size:.84rem;}
}

/* Retos Informáticos v10 - botón aplicar filtros */
.retos-page-osi{padding:28px 14px 54px;}
.retos-page-osi .retos-wide-wrap{max-width:1440px;}
.retos-page-osi .retos-hero-compact{margin-bottom:16px;}
.retos-page-osi .retos-kicker{padding:5px 11px;font-size:.7rem;margin-bottom:8px;}
.retos-page-osi .retos-hero-compact h1{font-size:clamp(1.65rem,2.75vw,2.55rem);line-height:1.05;margin-bottom:8px;}
.retos-page-osi .retos-hero-compact p{font-size:.95rem;line-height:1.45;}
.retos-page-osi .retos-panel{border-radius:20px;}
.retos-page-osi .retos-panel-head-compact{padding:16px 20px;gap:16px;align-items:start;}
.retos-page-osi .retos-panel-title h2{font-size:clamp(1.35rem,2.25vw,2.1rem);line-height:1.05;}
.retos-page-osi .retos-panel-title p{font-size:.95rem;}
.retos-page-osi .retos-challenge-meta{gap:7px;margin-top:9px;}
.retos-page-osi .retos-pill{padding:7px 10px;font-size:.76rem;}
.retos-page-osi .retos-filters{gap:10px;min-width:min(650px,100%);grid-template-columns:repeat(3,minmax(150px,1fr));}
.retos-page-osi .retos-field label{font-size:.78rem;margin-bottom:5px;}
.retos-page-osi .retos-field select{padding:10px 12px;border-radius:13px;font-size:.92rem;}
.retos-page-osi .retos-btn{padding:10px 14px;font-size:.88rem;}
.retos-page-osi .retos-btn.primary{box-shadow:0 10px 20px rgba(4,47,99,.18);}

.retos-page-osi .osi-layout-v8{grid-template-columns:minmax(250px,290px) minmax(560px,1fr) minmax(260px,310px);gap:14px;min-height:0;padding:16px;background:#f4f8fd;}
.retos-page-osi .osi-card{border-radius:16px;box-shadow:0 10px 20px rgba(4,47,99,.055);}
.retos-page-osi .osi-card-head{padding:12px 14px;}
.retos-page-osi .osi-card-head h3{font-size:.98rem;}
.retos-page-osi .osi-board-panel .osi-board{margin:14px;width:calc(100% - 28px);}
.retos-page-osi .osi-board{gap:4px;padding:9px;max-height:320px;border-radius:16px;}
.retos-page-osi .osi-cell{border-radius:7px;font-size:1rem;}
.retos-page-osi .osi-info-card.clean{padding:14px;}
.retos-page-osi .osi-info-card.clean p{font-size:.9rem;line-height:1.48;margin-bottom:12px;}
.retos-page-osi .osi-counter{padding:8px 12px;font-size:.85rem;}
.retos-page-osi .blockly-topbar{padding:12px 14px;}
.retos-page-osi .blockly-topbar h3{font-size:1rem;}
.retos-page-osi .blockly-wrap-v8 #blocklyWorkspace{height:540px;min-height:500px;}
.retos-page-osi .blockly-wrap-v8 .osi-actions{padding:12px 14px;gap:9px;}
.retos-page-osi .osi-solution-panel .solution-intro{padding:14px;font-size:.92rem;line-height:1.5;}
.retos-page-osi .osi-solution-panel .solution-code{margin:14px;min-height:300px;max-height:420px;font-size:.86rem;line-height:1.42;}
.retos-page-osi .solution-note{margin:0 14px 14px;padding:11px 12px;font-size:.88rem;}

/* Cono visual en lugar de flecha */
.osi-cone{position:relative;display:block;width:18px;height:20px;filter:drop-shadow(0 1px 1px rgba(4,47,99,.18));}
.osi-cone::before{content:"";position:absolute;left:4px;top:1px;width:10px;height:14px;background:linear-gradient(180deg,#ffb23d 0%,#ef7d00 100%);clip-path:polygon(50% 0,100% 100%,0 100%);border-radius:2px;}
.osi-cone::after{content:"";position:absolute;left:1px;bottom:1px;width:16px;height:5px;background:#c76500;border-radius:6px;}
.osi-cone.ghost{opacity:.42;}
.osi-cone.ghost::before{background:linear-gradient(180deg,#ffd58b 0%,#ffa73a 100%);}
.osi-cone.ghost::after{background:#df9a43;}

@media (min-width:1500px){
  .retos-page-osi .retos-wide-wrap{max-width:1480px;}
  .retos-page-osi .osi-layout-v8{grid-template-columns:300px minmax(700px,1fr) 320px;gap:16px;padding:18px;}
  .retos-page-osi .blockly-wrap-v8 #blocklyWorkspace{height:560px;min-height:520px;}
  .retos-page-osi .osi-board{max-height:340px;}
}
@media (max-width:1280px){
  .retos-page-osi .osi-layout-v8{grid-template-columns:280px minmax(520px,1fr);}
  .retos-page-osi .osi-solution-panel{grid-column:1 / -1;}
  .retos-page-osi .osi-solution-panel .solution-code{min-height:160px;max-height:280px;}
}
@media (max-width:980px){
  .retos-page-osi .retos-panel-head-compact{grid-template-columns:1fr;}
  .retos-page-osi .retos-filters{grid-template-columns:repeat(3,minmax(0,1fr));min-width:0;}
  .retos-page-osi .osi-layout-v8{grid-template-columns:1fr;}
  .retos-page-osi .blockly-wrap-v8 #blocklyWorkspace{height:520px;min-height:480px;}
}
@media (max-width:620px){
  .retos-page-osi{padding:22px 8px 44px;}
  .retos-page-osi .retos-filters{grid-template-columns:1fr;}
  .retos-page-osi .blockly-wrap-v8 #blocklyWorkspace{height:500px;min-height:460px;}
  .retos-page-osi .retos-hero-compact h1{font-size:1.65rem;}
}


/* Retos Informáticos v10 - filtros con botón Cargar reto */
.retos-page-osi .retos-filters{grid-template-columns:repeat(3,minmax(150px,1fr)) auto;align-items:end;}
.retos-field-action{display:flex;flex-direction:column;justify-content:end;}
.retos-load-btn{min-width:138px;white-space:nowrap;height:43px;}
.retos-load-btn.is-pending{animation:retoPulse 1.15s ease-in-out infinite;box-shadow:0 0 0 4px rgba(11,95,165,.12),0 12px 24px rgba(4,47,99,.22);}
@keyframes retoPulse{0%,100%{filter:brightness(1)}50%{filter:brightness(1.12)}}
@media (max-width:980px){
  .retos-page-osi .retos-filters{grid-template-columns:repeat(2,minmax(0,1fr));}
  .retos-field-action{grid-column:1 / -1;}
  .retos-load-btn{width:100%;}
}
@media (max-width:620px){
  .retos-page-osi .retos-filters{grid-template-columns:1fr;}
}

/* Retos Matemáticos v11 - página dedicada ONM/OMM/OMCC/OIM */
.retos-page-math-v11{padding:30px 14px 56px;background:linear-gradient(120deg,#f7fbff 0%,#eaf4ff 100%);}
.retos-math-wide-wrap{max-width:1560px;margin:0 auto;}
.retos-page-math-v11 .retos-hero-compact{margin-bottom:18px;text-align:center;}
.retos-page-math-v11 .retos-hero-compact h1{font-size:clamp(1.9rem,3.2vw,3.1rem);line-height:1.08;margin:0 0 8px;color:#042f63;}
.retos-page-math-v11 .retos-hero-compact p{max-width:850px;margin:0 auto;color:#405c7d;font-size:.98rem;line-height:1.55;}
.retos-panel-math-v11{border-radius:24px;overflow:hidden;background:#fff;border:1px solid #c8d9ec;box-shadow:0 18px 45px rgba(4,47,99,.08);}
.math-v11-head{display:grid;grid-template-columns:minmax(320px,1fr) minmax(640px,1.55fr);align-items:end;gap:22px;padding:24px 28px;border-bottom:1px solid #cdddec;background:#fff;}
.math-v11-head .retos-panel-title h2{font-size:clamp(1.55rem,2.4vw,2.55rem);line-height:1.08;margin:10px 0 4px;color:#042f63;}
.math-v11-head .retos-panel-title p{font-weight:900;color:#526a88;margin:0;}
.math-v11-head .retos-kicker.math{background:#fff1d8;border-color:#f7bd73;color:#dd6b00;}
.math-v11-filters{display:grid;grid-template-columns:repeat(4,minmax(135px,1fr)) auto;gap:12px;align-items:end;}
.math-v11-filters .retos-field label{font-size:.8rem;font-weight:900;color:#042f63;margin-bottom:6px;display:block;}
.math-v11-filters select{width:100%;padding:12px 14px;border:1px solid #bcd3ed;border-radius:14px;color:#042f63;background:#fff;font-weight:900;outline:none;}
.math-v11-filters select:focus{border-color:#0e62a8;box-shadow:0 0 0 3px rgba(14,98,168,.12);}
.retos-field-button .retos-btn{height:45px;white-space:nowrap;}
.retos-btn.needs-load{animation:retoPulse 1.2s ease-in-out infinite;border-color:#f0a84b;}
@keyframes retoPulse{0%,100%{box-shadow:0 0 0 0 rgba(240,168,75,.35)}50%{box-shadow:0 0 0 6px rgba(240,168,75,0)}}
.math-v11-layout{display:grid;grid-template-columns:minmax(520px,1.45fr) minmax(290px,.62fr) minmax(330px,.75fr);gap:18px;padding:22px;background:#f4f8fd;align-items:stretch;}
.math-v11-card{background:#fff;border:1px solid #c8d9ec;border-radius:20px;box-shadow:0 12px 28px rgba(4,47,99,.055);overflow:hidden;min-width:0;display:flex;flex-direction:column;}
.math-v11-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:15px 18px;border-bottom:1px solid #d4e1ee;background:#fbfdff;}
.math-v11-card-head h3{margin:0;color:#042f63;font-size:1.15rem;font-weight:900;}
.math-image-frame-v11{position:relative;margin:18px;border:1px solid #d4e1ee;border-radius:18px;background:#f8fbff;padding:16px;min-height:420px;display:flex;align-items:center;justify-content:center;}
.math-image-frame-v11 img{display:block;max-width:100%;max-height:640px;width:auto;height:auto;object-fit:contain;border-radius:14px;background:#fff;box-shadow:0 1px 0 rgba(4,47,99,.05);}
.math-empty-state{position:absolute;inset:16px;display:flex;align-items:center;justify-content:center;text-align:center;border-radius:14px;background:#f0f6fd;color:#405c7d;font-weight:900;padding:20px;}
.math-v11-card-body{padding:18px;display:flex;flex-direction:column;gap:14px;}
.math-v11-main-note{margin:0;color:#173d6b;line-height:1.6;font-size:1rem;font-weight:800;}
.math-v11-info{background:#fff8e8;border:1px solid #f6c979;color:#6d4100;padding:13px 14px;border-radius:14px;font-weight:800;line-height:1.55;}
.math-v11-work .retos-btn{width:max-content;}
.math-v11-work .retos-btn:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;}
.math-v11-solution .solution-intro{margin:0;color:#173d6b;line-height:1.55;font-weight:800;}
.math-solution-code{min-height:300px;max-height:520px;overflow:auto;border:1px solid #d4e1ee;border-radius:14px;background:#f6f9fd;color:#0b2442;padding:15px;white-space:pre-wrap;line-height:1.58;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,'Liberation Mono','Courier New',monospace;font-size:.92rem;}
.math-solution-code.show{background:#fff;border-color:#bcd3ed;}
.retos-page-math-v11 .retos-alert{min-height:0;}

@media (max-width:1320px){
  .math-v11-layout{grid-template-columns:1fr 360px;}
  .math-v11-solution{grid-column:1 / -1;}
  .math-solution-code{min-height:180px;max-height:360px;}
}
@media (max-width:1050px){
  .math-v11-head{grid-template-columns:1fr;align-items:start;}
  .math-v11-filters{grid-template-columns:repeat(2,minmax(0,1fr));}
  .retos-field-button{grid-column:1 / -1;}
  .retos-field-button .retos-btn{width:100%;}
  .math-v11-layout{grid-template-columns:1fr;}
  .math-image-frame-v11{min-height:320px;}
}
@media (max-width:620px){
  .retos-page-math-v11{padding-left:8px;padding-right:8px;}
  .math-v11-head{padding:18px;}
  .math-v11-filters{grid-template-columns:1fr;}
  .math-v11-layout{padding:12px;gap:12px;}
  .math-image-frame-v11{margin:12px;padding:10px;min-height:260px;}
  .math-v11-card-head{padding:13px 14px;}
  .math-v11-card-body{padding:14px;}
}

/* Retos Matemáticos v12 - banco visual sin soluciones */
.retos-page-math-v12{
  padding:30px 14px 56px;
  background:linear-gradient(120deg,#f7fbff 0%,#eaf4ff 100%);
}
.retos-page-math-v12 .retos-hero-compact{
  margin-bottom:18px;
  text-align:center;
}
.retos-page-math-v12 .retos-hero-compact h1{
  font-size:clamp(1.9rem,3.1vw,3rem);
  line-height:1.05;
  margin:0 0 8px;
  color:#042f63;
}
.retos-page-math-v12 .retos-hero-compact p{
  max-width:820px;
  margin:0 auto;
  color:#405c7d;
  font-size:.98rem;
  line-height:1.55;
}
.math-v12-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(320px,380px);
  gap:18px;
  align-items:start;
}
.math-v12-card{
  background:#fff;
  border:1px solid #c8d9ec;
  border-radius:22px;
  box-shadow:0 16px 36px rgba(4,47,99,.08);
  overflow:hidden;
  min-width:0;
}
.math-v12-card-head{
  padding:18px 20px;
  border-bottom:1px solid #d4e1ee;
  background:#fbfdff;
}
.math-v12-problem-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
}
.math-v12-card-head h2,
.math-v12-card-head h3{
  margin:0;
  color:#042f63;
  font-weight:900;
  line-height:1.08;
}
.math-v12-card-head h2{
  font-size:clamp(1.55rem,2.35vw,2.35rem);
  margin-top:8px;
}
.math-v12-card-head h3{
  font-size:1.2rem;
}
.math-v12-card-head p{
  margin:8px 0 0;
  color:#526a88;
  font-weight:900;
}
.math-v12-image-frame{
  position:relative;
  margin:18px;
  min-height:560px;
  background:#f8fbff;
  border:1px solid #d4e1ee;
  border-radius:18px;
  padding:16px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.math-v12-image-frame img{
  display:block;
  width:100%;
  max-width:100%;
  max-height:760px;
  height:auto;
  object-fit:contain;
  border-radius:14px;
  background:#fff;
  box-shadow:0 1px 0 rgba(4,47,99,.05);
}
.math-v12-control-body{
  padding:18px;
}
.math-v12-filters{
  display:grid;
  grid-template-columns:1fr;
  gap:12px;
}
.math-v12-filters .retos-field label{
  display:block;
  color:#042f63;
  font-size:.8rem;
  font-weight:900;
  margin:0 0 6px;
  white-space:normal;
}
.math-v12-filters .retos-field select{
  width:100%;
  min-height:46px;
  border:1px solid #bcd3ed;
  border-radius:14px;
  padding:10px 13px;
  background:#fff;
  color:#042f63;
  font-size:.92rem;
  font-weight:900;
  outline:none;
  text-overflow:ellipsis;
}
.math-v12-filters .retos-field select:focus{
  border-color:#0e62a8;
  box-shadow:0 0 0 3px rgba(14,98,168,.12);
}
.math-v12-load{
  width:100%;
  margin-top:2px;
  min-height:46px;
}
.math-v12-meta{
  gap:8px;
  margin:16px 0 0;
}
.math-v12-meta .retos-pill{
  font-size:.78rem;
  padding:7px 10px;
}
.math-v12-instructions{
  margin-top:16px;
  background:#fff8e8;
  border:1px solid #f6c979;
  color:#6d4100;
  padding:14px;
  border-radius:14px;
  font-weight:800;
  line-height:1.55;
}
.math-v12-note{
  margin-top:14px;
  background:#f0f6fd;
  border:1px solid #d4e1ee;
  color:#173d6b;
  padding:13px 14px;
  border-radius:14px;
  font-weight:800;
  line-height:1.5;
}
.retos-page-math-v12 .retos-alert{
  margin-top:14px;
}
.retos-page-math-v12 .retos-btn.needs-load{
  animation:retoPulse 1.2s ease-in-out infinite;
  border-color:#f0a84b;
}
@media (max-width:1180px){
  .math-v12-shell{
    grid-template-columns:1fr;
  }
  .math-v12-control-card{
    order:-1;
  }
  .math-v12-filters{
    grid-template-columns:repeat(2,minmax(0,1fr));
  }
  .math-v12-load{
    grid-column:1 / -1;
  }
  .math-v12-image-frame{
    min-height:420px;
  }
}
@media (max-width:680px){
  .retos-page-math-v12{
    padding:22px 8px 44px;
  }
  .math-v12-filters{
    grid-template-columns:1fr;
  }
  .math-v12-problem-head{
    flex-direction:column;
  }
  .math-v12-card-head{
    padding:16px;
  }
  .math-v12-control-body{
    padding:14px;
  }
  .math-v12-image-frame{
    margin:12px;
    padding:10px;
    min-height:300px;
  }
}


/* Retos Matemáticos v13 - banco visual 100 retos */
.retos-page-math-v13{padding:26px 14px 48px;}
.retos-page-math-v13 .retos-page-wrap{max-width:1380px;}
.retos-page-math-v13 .retos-hero h1{font-size:clamp(1.9rem,3.2vw,3.35rem);line-height:1.05;}
.retos-page-math-v13 .retos-hero p{font-size:.96rem;}
.retos-page-math-v13 .math-v12-shell{grid-template-columns:minmax(0,1fr) minmax(300px,360px);gap:18px;align-items:start;}
.retos-page-math-v13 .math-v12-card{border-radius:18px;}
.retos-page-math-v13 .math-v12-problem-head{padding:18px 22px;}
.retos-page-math-v13 .math-v12-problem-head h2{font-size:clamp(1.55rem,2.4vw,2.35rem);line-height:1.05;}
.retos-page-math-v13 .math-v12-problem-head p{font-size:1rem;}
.retos-page-math-v13 .math-v12-image-frame{padding:16px;}
.retos-page-math-v13 .math-v12-image-frame img{max-height:620px;object-fit:contain;}
.retos-page-math-v13 .math-v12-control-card{position:sticky;top:86px;}
.retos-page-math-v13 .math-v12-control-body{padding:18px;}
.retos-page-math-v13 .math-v12-filters{gap:12px;}
.retos-page-math-v13 .retos-field label{font-size:.78rem;margin-bottom:5px;white-space:normal;}
.retos-page-math-v13 .retos-field select{font-size:.92rem;padding:11px 13px;border-radius:13px;}
.retos-page-math-v13 .math-v12-note{display:none !important;}
@media (max-width:1080px){
  .retos-page-math-v13 .math-v12-shell{grid-template-columns:1fr;}
  .retos-page-math-v13 .math-v12-control-card{position:static;}
}

/* Retos Matemáticos v14 - UI corregida a zoom 100% */
.retos-page-math-v13{
  padding:24px 14px 46px;
  background:linear-gradient(135deg,#f6fbff 0%,#edf6ff 65%,#fff9ef 100%);
}
.retos-page-math-v13 .retos-page-wrap{
  max-width:1260px;
  margin:0 auto;
}
.retos-page-math-v13 .retos-hero{
  margin-bottom:20px;
}
.retos-page-math-v13 .retos-hero h1{
  font-size:clamp(2rem,3.25vw,2.85rem);
  line-height:1.05;
  margin:0 0 8px;
}
.retos-page-math-v13 .retos-hero p{
  font-size:.96rem;
  line-height:1.45;
  max-width:760px;
}
.retos-page-math-v13 .math-v13-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(300px,335px);
  gap:18px;
  align-items:start;
}
.retos-page-math-v13 .math-v13-card{
  background:#fff;
  border:1px solid var(--reto-border);
  border-radius:20px;
  box-shadow:0 12px 32px rgba(4,47,99,.10);
  overflow:hidden;
}
.retos-page-math-v13 .math-v13-card-head{
  padding:18px 20px;
  border-bottom:1px solid var(--reto-border);
  background:rgba(255,255,255,.92);
}
.retos-page-math-v13 .math-v13-problem-head{
  display:flex;
  justify-content:space-between;
  gap:14px;
  align-items:flex-start;
}
.retos-page-math-v13 .math-v13-problem-head h2{
  font-size:clamp(1.35rem,2.05vw,2rem);
  line-height:1.08;
  margin:0 0 8px;
  color:var(--reto-text);
}
.retos-page-math-v13 .math-v13-problem-head p{
  margin:0;
  color:#4b6078;
  font-size:.95rem;
  font-weight:800;
}
.retos-page-math-v13 .math-v13-image-frame{
  margin:14px;
  padding:14px;
  min-height:340px;
  max-height:calc(100vh - 300px);
  background:#f8fbff;
  border:1px solid #d7e6f5;
  border-radius:18px;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:auto;
}
.retos-page-math-v13 .math-v13-image-frame img{
  display:block;
  max-width:100%;
  width:auto;
  height:auto;
  max-height:560px;
  object-fit:contain;
  border-radius:10px;
}
.retos-page-math-v13 .math-empty-state{
  color:#526885;
  font-weight:800;
  text-align:center;
  padding:32px;
}
.retos-page-math-v13 .math-v13-control-card{
  position:sticky;
  top:92px;
}
.retos-page-math-v13 .math-v13-control-card h3{
  margin:0;
  color:var(--reto-text);
  font-size:1.28rem;
}
.retos-page-math-v13 .math-v13-control-body{
  padding:16px;
}
.retos-page-math-v13 .math-v13-filters{
  display:grid;
  grid-template-columns:1fr;
  gap:11px;
}
.retos-page-math-v13 .retos-field label{
  display:block;
  font-size:.77rem;
  line-height:1.1;
  margin:0 0 5px;
  color:var(--reto-text);
  font-weight:900;
  white-space:normal;
}
.retos-page-math-v13 .retos-field select{
  width:100%;
  min-height:43px;
  padding:9px 12px;
  border:1px solid #bcd3ed;
  border-radius:13px;
  background:#fff;
  color:#042f63;
  font-size:.9rem;
  font-weight:900;
  text-overflow:ellipsis;
}
.retos-page-math-v13 .math-v13-load{
  width:100%;
  min-height:44px;
  margin-top:2px;
}
.retos-page-math-v13 .math-v13-load.needs-load,
.retos-page-math-v13 .retos-btn.needs-load{
  animation:retoPulse 1.2s ease-in-out infinite;
}
.retos-page-math-v13 .math-v13-meta{
  display:flex;
  flex-wrap:wrap;
  gap:7px;
  margin:14px 0 0;
}
.retos-page-math-v13 .math-v13-meta .retos-pill{
  font-size:.74rem;
  padding:7px 9px;
}
.retos-page-math-v13 .math-v13-instructions{
  margin-top:14px;
  background:#fff8e8;
  border:1px solid #f6c979;
  color:#6d4100;
  padding:13px;
  border-radius:14px;
  font-size:.9rem;
  font-weight:800;
  line-height:1.5;
}
.retos-page-math-v13 .math-v13-note{
  display:none !important;
}
.retos-page-math-v13 .retos-alert{
  font-size:.86rem;
  line-height:1.35;
  margin-top:12px;
}

@media (min-width:1400px){
  .retos-page-math-v13 .retos-page-wrap{max-width:1320px;}
  .retos-page-math-v13 .math-v13-shell{grid-template-columns:minmax(0,1fr) 350px;}
}
@media (max-width:1100px){
  .retos-page-math-v13 .math-v13-shell{grid-template-columns:1fr;}
  .retos-page-math-v13 .math-v13-control-card{position:static;order:-1;}
  .retos-page-math-v13 .math-v13-filters{grid-template-columns:repeat(2,minmax(0,1fr));}
  .retos-page-math-v13 .math-v13-load{grid-column:1 / -1;}
  .retos-page-math-v13 .math-v13-image-frame{max-height:none;min-height:320px;}
}
@media (max-width:680px){
  .retos-page-math-v13{padding:20px 8px 42px;}
  .retos-page-math-v13 .retos-hero h1{font-size:1.75rem;}
  .retos-page-math-v13 .math-v13-filters{grid-template-columns:1fr;}
  .retos-page-math-v13 .math-v13-problem-head{flex-direction:column;}
  .retos-page-math-v13 .math-v13-card-head{padding:15px;}
  .retos-page-math-v13 .math-v13-image-frame{margin:10px;padding:10px;min-height:260px;}
}


/* Retos Matemáticos v15 - reescritura visual a zoom 100%
   Objetivo: imagen completa, sin recortes, con panel derecho fijo y proporción estable. */
.retos-page-math-v13{
  padding:20px 16px 52px !important;
  background:linear-gradient(135deg,#f6fbff 0%,#edf6ff 68%,#fff9ef 100%) !important;
}
.retos-page-math-v13 .retos-page-wrap{
  max-width:1460px !important;
  width:100% !important;
}
.retos-page-math-v13 .retos-hero{
  margin-bottom:18px !important;
  text-align:center !important;
}
.retos-page-math-v13 .retos-hero h1{
  font-size:clamp(2rem,2.75vw,3rem) !important;
  line-height:1.05 !important;
  margin:0 0 8px !important;
}
.retos-page-math-v13 .retos-hero p{
  font-size:.95rem !important;
  line-height:1.45 !important;
  max-width:760px !important;
}
.retos-page-math-v13 .math-v13-shell{
  display:grid !important;
  grid-template-columns:minmax(0,1fr) 360px !important;
  gap:20px !important;
  align-items:start !important;
}
.retos-page-math-v13 .math-v13-card{
  border-radius:18px !important;
  box-shadow:0 14px 34px rgba(4,47,99,.10) !important;
}
.retos-page-math-v13 .math-v13-card-head{
  padding:18px 20px !important;
}
.retos-page-math-v13 .math-v13-problem-head h2{
  font-size:clamp(1.45rem,2.1vw,2.25rem) !important;
  margin-bottom:8px !important;
}
.retos-page-math-v13 .math-v13-problem-head p{
  font-size:.95rem !important;
}
.retos-page-math-v13 .math-v13-image-frame{
  margin:16px !important;
  padding:16px !important;
  min-height:0 !important;
  max-height:none !important;
  height:auto !important;
  overflow:visible !important;
  align-items:flex-start !important;
  background:#f8fbff !important;
}
.retos-page-math-v13 .math-v13-image-frame img{
  display:block !important;
  width:100% !important;
  max-width:100% !important;
  height:auto !important;
  max-height:none !important;
  object-fit:contain !important;
  object-position:top center !important;
  background:#fff !important;
  border-radius:10px !important;
}
.retos-page-math-v13 .math-v13-control-card{
  position:sticky !important;
  top:90px !important;
}
.retos-page-math-v13 .math-v13-control-card h3{
  font-size:1.2rem !important;
}
.retos-page-math-v13 .math-v13-control-body{
  padding:15px !important;
}
.retos-page-math-v13 .math-v13-filters{
  gap:10px !important;
}
.retos-page-math-v13 .retos-field label{
  font-size:.76rem !important;
  margin-bottom:5px !important;
}
.retos-page-math-v13 .retos-field select{
  min-height:41px !important;
  padding:8px 11px !important;
  font-size:.9rem !important;
  border-radius:12px !important;
}
.retos-page-math-v13 .math-v13-load{
  min-height:43px !important;
}
.retos-page-math-v13 .math-v13-instructions{
  font-size:.86rem !important;
  line-height:1.42 !important;
  padding:12px !important;
  margin-top:12px !important;
}
.retos-page-math-v13 .math-v13-meta{
  margin-top:12px !important;
  gap:6px !important;
}
.retos-page-math-v13 .math-v13-meta .retos-pill{
  font-size:.72rem !important;
  padding:6px 8px !important;
}
@media (max-width:1180px){
  .retos-page-math-v13 .math-v13-shell{
    grid-template-columns:1fr !important;
  }
  .retos-page-math-v13 .math-v13-control-card{
    position:static !important;
    order:-1 !important;
  }
  .retos-page-math-v13 .math-v13-filters{
    grid-template-columns:repeat(2,minmax(0,1fr)) !important;
  }
  .retos-page-math-v13 .math-v13-load{
    grid-column:1 / -1 !important;
  }
}
@media (max-width:720px){
  .retos-page-math-v13{
    padding:18px 8px 42px !important;
  }
  .retos-page-math-v13 .retos-hero h1{
    font-size:1.72rem !important;
  }
  .retos-page-math-v13 .retos-hero p{
    font-size:.88rem !important;
  }
  .retos-page-math-v13 .math-v13-filters{
    grid-template-columns:1fr !important;
  }
  .retos-page-math-v13 .math-v13-problem-head{
    flex-direction:column !important;
  }
  .retos-page-math-v13 .math-v13-card-head{
    padding:14px !important;
  }
  .retos-page-math-v13 .math-v13-image-frame{
    margin:10px !important;
    padding:10px !important;
  }
}


/* Retos Matemáticos v16 - render definitivo de imágenes y layout 100% */
.retos-page-math-v13{
  padding:18px 16px 48px !important;
  background:linear-gradient(135deg,#f6fbff 0%,#edf6ff 68%,#fff9ef 100%) !important;
}
.retos-page-math-v13 .retos-page-wrap{
  max-width:1500px !important;
  width:min(100%,1500px) !important;
  margin:0 auto !important;
}
.retos-page-math-v13 .retos-hero{
  display:block !important;
  margin:0 0 18px !important;
  padding:0 !important;
  min-height:0 !important;
  text-align:center !important;
}
.retos-page-math-v13 .retos-hero h1{
  display:block !important;
  color:#042f63 !important;
  font-size:clamp(2rem,3vw,3rem) !important;
  line-height:1.05 !important;
  margin:0 0 8px !important;
}
.retos-page-math-v13 .retos-hero p{
  display:block !important;
  color:#526885 !important;
  font-size:.95rem !important;
  line-height:1.45 !important;
  max-width:780px !important;
  margin:0 auto !important;
}
.retos-page-math-v13 .math-v13-shell{
  display:grid !important;
  grid-template-columns:minmax(0,1fr) minmax(310px,360px) !important;
  gap:18px !important;
  align-items:start !important;
}
.retos-page-math-v13 .math-v13-card{
  border:1px solid #cfe1f3 !important;
  border-radius:18px !important;
  box-shadow:0 12px 30px rgba(4,47,99,.08) !important;
  overflow:hidden !important;
  background:#fff !important;
}
.retos-page-math-v13 .math-v13-card-head{
  padding:16px 18px !important;
  background:#fff !important;
  border-bottom:1px solid #cfe1f3 !important;
}
.retos-page-math-v13 .math-v13-problem-head{
  display:flex !important;
  align-items:flex-start !important;
  justify-content:space-between !important;
  gap:12px !important;
}
.retos-page-math-v13 .math-v13-problem-head h2{
  font-size:clamp(1.45rem,2vw,2.15rem) !important;
  line-height:1.08 !important;
  margin:0 0 8px !important;
  color:#042f63 !important;
}
.retos-page-math-v13 .math-v13-problem-head p{
  font-size:.9rem !important;
  line-height:1.25 !important;
  margin:0 !important;
  color:#4b6078 !important;
}
.retos-page-math-v13 .math-v13-image-frame{
  display:block !important;
  margin:14px !important;
  padding:12px !important;
  min-height:260px !important;
  max-height:none !important;
  height:auto !important;
  overflow:auto !important;
  background:#f8fbff !important;
  border:1px solid #d7e6f5 !important;
  border-radius:16px !important;
}
.retos-page-math-v13 .math-v13-image-frame img{
  display:block !important;
  width:100% !important;
  max-width:100% !important;
  height:auto !important;
  max-height:none !important;
  object-fit:contain !important;
  object-position:top center !important;
  margin:0 auto !important;
  background:#fff !important;
  border-radius:10px !important;
}
.retos-page-math-v13 .math-empty-state{
  display:flex !important;
  min-height:240px !important;
  align-items:center !important;
  justify-content:center !important;
  text-align:center !important;
  color:#526885 !important;
  font-weight:900 !important;
  padding:24px !important;
}
.retos-page-math-v13 .math-empty-state.retos-hidden{display:none !important;}
.retos-page-math-v13 .math-v13-control-card{
  position:sticky !important;
  top:92px !important;
}
.retos-page-math-v13 .math-v13-control-card h3{
  font-size:1.2rem !important;
  margin:0 !important;
}
.retos-page-math-v13 .math-v13-control-body{padding:14px !important;}
.retos-page-math-v13 .math-v13-filters{
  display:grid !important;
  grid-template-columns:1fr !important;
  gap:10px !important;
}
.retos-page-math-v13 .retos-field label{
  font-size:.74rem !important;
  line-height:1.15 !important;
  margin-bottom:5px !important;
  color:#042f63 !important;
}
.retos-page-math-v13 .retos-field select{
  min-height:40px !important;
  padding:8px 11px !important;
  font-size:.88rem !important;
  line-height:1.2 !important;
  border-radius:12px !important;
}
.retos-page-math-v13 .math-v13-load{min-height:42px !important;}
.retos-page-math-v13 .math-v13-meta{margin-top:12px !important;gap:6px !important;}
.retos-page-math-v13 .math-v13-meta .retos-pill{font-size:.7rem !important;padding:6px 8px !important;}
.retos-page-math-v13 .math-v13-instructions{
  margin-top:12px !important;
  padding:12px !important;
  border-radius:13px !important;
  font-size:.84rem !important;
  line-height:1.45 !important;
}
@media (max-width:1180px){
  .retos-page-math-v13 .math-v13-shell{grid-template-columns:1fr !important;}
  .retos-page-math-v13 .math-v13-control-card{position:static !important;order:-1 !important;}
  .retos-page-math-v13 .math-v13-filters{grid-template-columns:repeat(2,minmax(0,1fr)) !important;}
  .retos-page-math-v13 .math-v13-load{grid-column:1 / -1 !important;}
}
@media (max-width:720px){
  .retos-page-math-v13{padding:16px 8px 40px !important;}
  .retos-page-math-v13 .retos-hero h1{font-size:1.72rem !important;}
  .retos-page-math-v13 .retos-hero p{font-size:.88rem !important;}
  .retos-page-math-v13 .math-v13-filters{grid-template-columns:1fr !important;}
  .retos-page-math-v13 .math-v13-problem-head{flex-direction:column !important;}
  .retos-page-math-v13 .math-v13-card-head{padding:14px !important;}
  .retos-page-math-v13 .math-v13-image-frame{margin:10px !important;padding:9px !important;}
}


/* Retos Matemáticos v17 - estado inicial limpio + UI a 100% */
.retos-page-math-v13{
  padding:18px 16px 48px !important;
  min-height:auto !important;
}
.retos-page-math-v13 .retos-hero{
  display:block !important;
  margin:0 auto 18px !important;
  padding:0 !important;
  min-height:0 !important;
  text-align:center !important;
}
.retos-page-math-v13 .retos-kicker{
  margin-bottom:8px !important;
}
.retos-page-math-v13 .retos-hero h1{
  display:block !important;
  font-size:clamp(2rem,2.8vw,3rem) !important;
  line-height:1.05 !important;
  margin:0 0 8px !important;
}
.retos-page-math-v13 .retos-hero p{
  display:block !important;
  max-width:780px !important;
  margin:0 auto !important;
  font-size:.94rem !important;
  line-height:1.45 !important;
}
.retos-page-math-v13 .math-v13-shell{
  display:grid !important;
  grid-template-columns:minmax(0,1fr) minmax(320px,360px) !important;
  gap:18px !important;
  align-items:start !important;
}
.retos-page-math-v13 .math-v13-image-frame{
  position:relative !important;
  display:flex !important;
  align-items:flex-start !important;
  justify-content:center !important;
  margin:14px !important;
  padding:12px !important;
  min-height:260px !important;
  height:auto !important;
  max-height:none !important;
  overflow:auto !important;
  background:#f8fbff !important;
  border:1px solid #d7e6f5 !important;
  border-radius:16px !important;
}
.retos-page-math-v13 .math-v13-image-frame img{
  display:block !important;
  width:100% !important;
  max-width:100% !important;
  height:auto !important;
  max-height:none !important;
  object-fit:contain !important;
  object-position:top center !important;
  margin:0 auto !important;
  background:#fff !important;
  border-radius:10px !important;
}
.retos-page-math-v13 .math-v13-image-frame img.retos-hidden{
  display:none !important;
}
.retos-page-math-v13 .math-empty-state{
  position:static !important;
  inset:auto !important;
  display:flex !important;
  width:100% !important;
  min-height:260px !important;
  align-items:center !important;
  justify-content:center !important;
  padding:16px !important;
  background:transparent !important;
  border-radius:14px !important;
}
.retos-page-math-v13 .math-empty-state.retos-hidden{
  display:none !important;
}
.math-empty-card{
  width:100% !important;
  max-width:620px !important;
  min-height:210px !important;
  display:flex !important;
  flex-direction:column !important;
  align-items:center !important;
  justify-content:center !important;
  gap:12px !important;
  text-align:center !important;
  border:1px dashed #b9d2ee !important;
  border-radius:18px !important;
  background:linear-gradient(135deg,#ffffff 0%,#f2f8ff 100%) !important;
  padding:28px !important;
  box-shadow:0 10px 24px rgba(4,47,99,.06) !important;
}
.math-empty-badge{
  display:inline-flex !important;
  padding:7px 13px !important;
  border-radius:999px !important;
  background:#fff2dc !important;
  border:1px solid #f4bf79 !important;
  color:#ef6c00 !important;
  font-size:.72rem !important;
  font-weight:900 !important;
  letter-spacing:.04em !important;
  text-transform:uppercase !important;
}
.math-empty-card strong{
  color:#042f63 !important;
  font-size:1.25rem !important;
  line-height:1.2 !important;
}
.math-empty-card small{
  color:#526885 !important;
  font-size:.96rem !important;
  line-height:1.5 !important;
  max-width:520px !important;
}
.retos-page-math-v13 .math-v13-control-card{
  position:sticky !important;
  top:88px !important;
}
.retos-page-math-v13 .math-v13-control-body{
  padding:14px !important;
}
@media (max-width:1180px){
  .retos-page-math-v13 .math-v13-shell{
    grid-template-columns:1fr !important;
  }
  .retos-page-math-v13 .math-v13-control-card{
    order:-1 !important;
    position:static !important;
  }
  .retos-page-math-v13 .math-v13-filters{
    grid-template-columns:repeat(2,minmax(0,1fr)) !important;
  }
  .retos-page-math-v13 .math-v13-load{
    grid-column:1 / -1 !important;
  }
}
@media (max-width:720px){
  .retos-page-math-v13{
    padding:16px 8px 40px !important;
  }
  .retos-page-math-v13 .retos-hero h1{
    font-size:1.7rem !important;
  }
  .retos-page-math-v13 .math-v13-filters{
    grid-template-columns:1fr !important;
  }
  .math-empty-card{
    min-height:180px !important;
    padding:22px 14px !important;
  }
}


/* Retos Matemáticos v18 - limpieza de panel lateral + banco 200 */
.retos-page-math-v13 .math-v13-instructions{display:none !important;}
.retos-page-math-v13 .math-v13-control-body{padding-bottom:16px !important;}
.retos-page-math-v13 .math-v13-meta{margin-top:14px !important;}
.retos-page-math-v13 .math-v13-problem-card{min-height:0 !important;}
.retos-page-math-v13 .math-v13-image-frame{min-height:240px !important;}
.retos-page-math-v13 .math-v13-image-frame img{max-width:100% !important;height:auto !important;}
@media (min-width:1280px){
  .retos-page-math-v13 .math-v13-shell{grid-template-columns:minmax(0,1fr) 350px !important;}
}


/* Retos Matemáticos v19 - solo capturas oficiales + render estable */
.retos-page-math-v13 .math-v13-shell{grid-template-columns:minmax(0,1fr) 300px !important;gap:16px !important;align-items:start !important;}
.retos-page-math-v13 .math-v13-card{overflow:hidden !important;border-radius:24px !important;}
.retos-page-math-v13 .math-v13-problem-head{align-items:flex-start !important;gap:18px !important;}
.retos-page-math-v13 .math-v13-problem-head h2{font-size:clamp(1.75rem,2.8vw,2.65rem) !important;line-height:1.08 !important;}
.retos-page-math-v13 .math-v13-problem-head p{margin-top:6px !important;}
.retos-page-math-v13 .math-v13-image-frame{display:block !important;overflow:visible !important;min-height:0 !important;height:auto !important;max-height:none !important;padding:14px !important;margin:14px !important;background:#f7fbff !important;}
.retos-page-math-v13 .math-v13-image-frame img{display:block !important;width:100% !important;height:auto !important;max-width:100% !important;max-height:none !important;object-fit:contain !important;object-position:top center !important;border:1px solid #dce8f4 !important;box-shadow:none !important;}
.retos-page-math-v13 .math-empty-state{min-height:360px !important;padding:12px !important;background:transparent !important;}
.retos-page-math-v13 .math-v13-control-card{position:sticky !important;top:86px !important;align-self:start !important;}
.retos-page-math-v13 #math-alert{display:none !important;}
.retos-page-math-v13 .retos-alert{display:none !important;}
.retos-page-math-v13 .math-v13-control-body{padding:14px !important;}
.retos-page-math-v13 .math-v13-filters{grid-template-columns:1fr !important;gap:12px !important;}
.retos-page-math-v13 .math-v13-load{width:100% !important;min-height:46px !important;}
.retos-page-math-v13 .math-v13-meta{margin-top:12px !important;gap:8px !important;}
.retos-page-math-v13 .math-v13-meta .retos-pill{font-size:.76rem !important;padding:7px 10px !important;}
@media (max-width:1180px){
  .retos-page-math-v13 .math-v13-shell{grid-template-columns:1fr !important;}
  .retos-page-math-v13 .math-v13-control-card{position:static !important;order:0 !important;}
  .retos-page-math-v13 .math-v13-control-body{padding:16px !important;}
}
@media (max-width:720px){
  .retos-page-math-v13 .math-v13-image-frame{padding:10px !important;margin:10px !important;}
  .retos-page-math-v13 .math-empty-state{min-height:260px !important;}
}

/* Retos Matemáticos v20 - filtros sin tipo + banco 300 */
.retos-page-math-v13 .math-v13-shell{grid-template-columns:minmax(0,1fr) 300px !important;gap:16px !important;align-items:start !important;}
.retos-page-math-v13 .math-v13-filters{grid-template-columns:1fr !important;}
.retos-page-math-v13 .math-v13-meta .retos-pill{font-size:.76rem !important;padding:7px 10px !important;}
.retos-page-math-v13 .math-empty-card small{max-width:560px !important;}
.retos-page-math-v13 .math-v13-image-frame{display:block !important;overflow:visible !important;min-height:0 !important;height:auto !important;max-height:none !important;padding:14px !important;margin:14px !important;background:#f7fbff !important;}
.retos-page-math-v13 .math-v13-image-frame img{display:block !important;width:100% !important;height:auto !important;max-width:100% !important;max-height:none !important;object-fit:contain !important;object-position:top center !important;border:1px solid #dce8f4 !important;background:#fff !important;}
@media (max-width:1180px){
  .retos-page-math-v13 .math-v13-shell{grid-template-columns:1fr !important;}
  .retos-page-math-v13 .math-v13-control-card{position:static !important;order:0 !important;}
}

/* Retos Matemáticos v21 - render compacto + botón otro reto */
.retos-page-math-v13 .math-v13-shell{grid-template-columns:minmax(0,1fr) 300px !important;gap:16px !important;align-items:start !important;}
.retos-page-math-v13 .math-v13-card{border-radius:22px !important;overflow:hidden !important;}
.retos-page-math-v13 .math-v13-problem-head{padding:18px 20px !important;gap:16px !important;align-items:flex-start !important;}
.retos-page-math-v13 .math-v13-problem-head h2{font-size:clamp(1.55rem,2.45vw,2.35rem) !important;line-height:1.08 !important;margin-bottom:6px !important;}
.retos-page-math-v13 .math-v13-problem-head p{font-size:.92rem !important;}
.retos-page-math-v13 .math-v13-image-frame{display:block !important;margin:10px !important;padding:10px !important;min-height:240px !important;height:auto !important;max-height:none !important;overflow:visible !important;background:#f8fbff !important;border:1px solid #d7e6f5 !important;border-radius:16px !important;}
.retos-page-math-v13 .math-v13-image-frame img{display:block !important;width:100% !important;height:auto !important;max-width:100% !important;max-height:none !important;object-fit:contain !important;object-position:top center !important;margin:0 auto !important;background:#fff !important;border:1px solid #dce8f4 !important;border-radius:10px !important;box-shadow:none !important;}
.retos-page-math-v13 .math-v13-image-frame img.retos-hidden{display:none !important;}
.retos-page-math-v13 .math-empty-state{position:static !important;display:flex !important;align-items:center !important;justify-content:center !important;min-height:260px !important;padding:14px !important;background:transparent !important;}
.retos-page-math-v13 .math-empty-state.retos-hidden{display:none !important;}
.retos-page-math-v13 .math-v13-control-card{position:sticky !important;top:88px !important;}
.retos-page-math-v13 .math-v13-control-body{padding:14px !important;}
.retos-page-math-v13 .math-v13-filters{grid-template-columns:1fr !important;gap:12px !important;}
.retos-page-math-v13 .math-v13-load,.retos-page-math-v13 .math-v13-next{width:100% !important;min-height:44px !important;}
.retos-page-math-v13 .math-v13-next{margin-top:0 !important;}
.retos-page-math-v13 .math-v13-next:disabled{opacity:.55 !important;cursor:not-allowed !important;filter:grayscale(.2) !important;}
.retos-page-math-v13 .math-v13-meta{margin-top:12px !important;gap:7px !important;}
.retos-page-math-v13 .math-v13-meta .retos-pill{font-size:.72rem !important;padding:7px 9px !important;}
.retos-page-math-v13 .math-v13-instructions{display:none !important;}
@media (max-width:1180px){
  .retos-page-math-v13 .math-v13-shell{grid-template-columns:1fr !important;}
  .retos-page-math-v13 .math-v13-control-card{position:static !important;order:0 !important;}
}
@media (max-width:720px){
  .retos-page-math-v13 .math-v13-image-frame{margin:8px !important;padding:8px !important;}
  .retos-page-math-v13 .math-v13-problem-head{padding:15px !important;}
  .retos-page-math-v13 .math-v13-problem-head{flex-direction:column !important;}
}

/* Entrenamiento Académico + Preparación AVANZO v20260619.05 */
.training-home-section{
  background:linear-gradient(135deg,#f7fbff 0%,#edf6ff 50%,#fff8eb 100%);
}
.training-home-grid{
  grid-template-columns:repeat(3,minmax(0,1fr)) !important;
  align-items:stretch;
}
.retos-home-card.avanzo:after{background:rgba(255,183,53,.20);}
.retos-home-card.avanzo .retos-home-icon{background:linear-gradient(135deg,var(--reto-blue),var(--reto-blue-2));}
.retos-home-card.avanzo .retos-home-btn{background:linear-gradient(135deg,var(--reto-blue),var(--reto-blue-2));}
.retos-home-card.avanzo .retos-home-btn:hover{filter:brightness(1.06);}

.avanzo-page{
  background:linear-gradient(135deg,#f7fbff 0%,#eaf4ff 54%,#fff9ed 100%);
  min-height:100vh;
  padding:42px 18px 70px;
}
.avanzo-wrap{max-width:1180px;margin:0 auto;}
.avanzo-page-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:22px;
  margin:0 0 24px;
  padding:0;
}
.avanzo-page-title{min-width:0;}
.avanzo-page-title h1{
  color:#042f63;
  font-size:clamp(2.05rem,4vw,3.15rem);
  line-height:1.02;
  margin:8px 0 8px;
  letter-spacing:-.035em;
}
.avanzo-page-title p{
  color:#526885;
  line-height:1.5;
  margin:0;
  max-width:560px;
  font-weight:800;
}
.avanzo-head-back{
  text-decoration:none;
  min-width:190px;
  justify-content:center;
  margin-top:18px;
  box-shadow:0 12px 22px rgba(4,47,99,.14);
}
.avanzo-hero{
  position:relative;
  overflow:hidden;
  background:#fff;
  border:1px solid #cddbea;
  border-radius:30px;
  box-shadow:0 18px 45px rgba(4,47,99,.14);
  padding:34px;
  margin-bottom:24px;
}
.avanzo-hero:after{
  content:"";
  position:absolute;
  right:-54px;
  top:-58px;
  width:190px;
  height:190px;
  border-radius:999px;
  background:rgba(255,183,53,.18);
}
.avanzo-hero-content{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;}
.avanzo-hero h1{color:#042f63;font-size:clamp(2rem,4vw,3.4rem);line-height:1.02;margin:0 0 10px;}
.avanzo-hero p{color:#526885;line-height:1.65;margin:0;max-width:780px;font-weight:700;}
.avanzo-status-card{
  background:#f3f9ff;
  border:1px solid #cddbea;
  border-radius:22px;
  padding:18px;
  min-width:230px;
  color:#062b57;
}
.avanzo-status-card strong{display:block;font-size:1.05rem;margin-bottom:6px;}
.avanzo-status-card span{display:block;color:#60718c;font-weight:800;font-size:.92rem;line-height:1.45;}
.avanzo-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin:22px 0;}
.avanzo-area-card{
  background:#fff;
  border:1px solid #cddbea;
  border-radius:22px;
  box-shadow:0 12px 28px rgba(4,47,99,.08);
  padding:20px;
  min-height:180px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}
.avanzo-area-icon{
  width:48px;
  height:48px;
  border-radius:16px;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg,#042f63,#0b5fa5);
  color:#fff;
  margin-bottom:14px;
}
.avanzo-area-icon svg{width:25px;height:25px;}
.avanzo-area-card h2{font-size:1.08rem;line-height:1.15;color:#042f63;margin:0 0 8px;}
.avanzo-area-card p{color:#60718c;font-weight:700;font-size:.9rem;line-height:1.45;margin:0;}
.avanzo-area-card .retos-pill{width:max-content;margin-top:14px;font-size:.72rem;padding:7px 10px;}
.avanzo-shell{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(320px,.8fr);gap:20px;align-items:start;margin-top:24px;}
.avanzo-panel{
  background:#fff;
  border:1px solid #cddbea;
  border-radius:26px;
  box-shadow:0 16px 36px rgba(4,47,99,.09);
  overflow:hidden;
}
.avanzo-panel-head{padding:22px 24px;border-bottom:1px solid #d9e6f3;background:#fbfdff;}
.avanzo-panel-head h2{color:#042f63;font-size:clamp(1.35rem,2.4vw,2.1rem);line-height:1.08;margin:0 0 8px;}
.avanzo-panel-head p{color:#60718c;margin:0;font-weight:800;line-height:1.55;}
.avanzo-panel-body{padding:22px 24px;}
.avanzo-mode-list{display:grid;gap:14px;}
.avanzo-mode-card{
  border:1px solid #d7e6f5;
  border-radius:20px;
  background:#f8fbff;
  padding:18px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:16px;
  align-items:center;
}
.avanzo-mode-card h3{color:#042f63;margin:0 0 6px;font-size:1.12rem;line-height:1.15;}
.avanzo-mode-card p{color:#526885;margin:0;font-weight:700;line-height:1.5;}
.avanzo-disabled-btn{
  border:0;
  border-radius:999px;
  background:#dce8f4;
  color:#60718c;
  font-weight:900;
  padding:12px 18px;
  cursor:not-allowed;
  white-space:nowrap;
}
.avanzo-notice{
  margin-top:16px;
  background:#fff8e8;
  border:1px solid #f6c979;
  color:#6d4100;
  border-radius:18px;
  padding:16px;
  font-weight:800;
  line-height:1.55;
}
.avanzo-steps{counter-reset:avanzoStep;display:grid;gap:14px;margin:0;padding:0;list-style:none;}
.avanzo-steps li{
  counter-increment:avanzoStep;
  display:grid;
  grid-template-columns:42px minmax(0,1fr);
  gap:12px;
  align-items:start;
  color:#173d6b;
  font-weight:800;
  line-height:1.5;
}
.avanzo-steps li:before{
  content:counter(avanzoStep);
  width:42px;
  height:42px;
  border-radius:14px;
  display:grid;
  place-items:center;
  background:#edf6ff;
  color:#042f63;
  font-weight:900;
}
.avanzo-back-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px;}
.avanzo-back-row a{text-decoration:none;}


.avanzo-practice-shell{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:20px;
  align-items:start;
  margin-top:24px;
}
.avanzo-practice-card{
  background:#fff;
  border:1px solid #cddbea;
  border-radius:26px;
  box-shadow:0 16px 36px rgba(4,47,99,.10);
  overflow:hidden;
  width:100%;
}
.avanzo-practice-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:18px;
  padding:22px 24px;
  border-bottom:1px solid #d9e6f3;
  background:#fbfdff;
}
.avanzo-practice-head h2{
  color:#042f63;
  font-size:clamp(1.45rem,2.5vw,2.15rem);
  line-height:1.08;
  margin:8px 0 8px;
}
.avanzo-practice-head p{
  color:#60718c;
  margin:0;
  font-weight:800;
  line-height:1.55;
}
.avanzo-demo-status{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:999px;
  background:#edf6ff;
  border:1px solid #d7e6f5;
  color:#042f63;
  font-weight:900;
  padding:10px 14px;
  white-space:nowrap;
}
.avanzo-area-tabs{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:10px;
  padding:18px 24px;
  border-bottom:1px solid #d9e6f3;
  background:#fff;
}
.avanzo-area-tab{
  border:1px solid #cddbea;
  background:#f8fbff;
  color:#042f63;
  border-radius:16px;
  padding:12px 10px;
  font-weight:900;
  cursor:pointer;
  line-height:1.15;
  min-height:48px;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease;
}
.avanzo-area-tab:hover,
.avanzo-area-tab.active{
  background:linear-gradient(135deg,#042f63,#0b5fa5);
  border-color:#0b5fa5;
  color:#fff;
  box-shadow:0 12px 24px rgba(4,47,99,.18);
  transform:translateY(-1px);
}
.avanzo-question-panel{
  padding:24px;
}
.avanzo-question-meta{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  color:#042f63;
  font-weight:900;
  margin-bottom:14px;
}
.avanzo-question-meta span{
  display:inline-flex;
  align-items:center;
  min-height:34px;
  border-radius:999px;
  background:#edf6ff;
  border:1px solid #d7e6f5;
  padding:8px 12px;
}
.avanzo-question-box{
  min-height:230px;
  border:1px solid #cddbea;
  background:#f8fbff;
  border-radius:22px;
  padding:34px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  box-shadow:inset 0 0 0 4px rgba(255,255,255,.65);
}
.avanzo-question-box h3{
  color:#042f63;
  font-size:clamp(1.15rem,2vw,1.55rem);
  margin:0 0 12px;
  text-transform:uppercase;
  letter-spacing:.02em;
}
.avanzo-question-box p{
  color:#526885;
  margin:0;
  font-weight:800;
  line-height:1.65;
  font-size:1.02rem;
}
.avanzo-options{
  display:grid;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:16px;
  padding:24px 0 14px;
}
.avanzo-option-btn{
  min-height:70px;
  border:1px solid #cddbea;
  background:#fff;
  border-radius:22px;
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  box-shadow:0 10px 22px rgba(4,47,99,.08);
  transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease,background .16s ease;
}
.avanzo-option-btn span{
  width:44px;
  height:44px;
  border-radius:999px;
  display:grid;
  place-items:center;
  background:#edf6ff;
  color:#042f63;
  font-weight:900;
  font-size:1.05rem;
  border:2px solid #0b5fa5;
}
.avanzo-option-btn:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 26px rgba(4,47,99,.14);
  border-color:#0b5fa5;
}
.avanzo-option-btn.selected{
  border-width:2px;
}
.avanzo-option-btn.is-correct{
  background:#f0f8ff;
  border-color:#0b5fa5;
}
.avanzo-option-btn.is-correct span{
  background:#0b5fa5;
  color:#fff;
}
.avanzo-option-btn.is-wrong{
  background:#fff8e8;
  border-color:#f0a84b;
}
.avanzo-option-btn.is-wrong span{
  background:#f0a84b;
  color:#042f63;
  border-color:#f0a84b;
}
.avanzo-feedback{
  min-height:48px;
  border:1px solid #d7e6f5;
  border-radius:18px;
  background:#f8fbff;
  color:#526885;
  font-weight:900;
  line-height:1.45;
  padding:14px 16px;
}
.avanzo-feedback.correct{
  background:#f0f8ff;
  border-color:#0b5fa5;
  color:#042f63;
}
.avanzo-feedback.wrong{
  background:#fff8e8;
  border-color:#f0a84b;
  color:#6d4100;
}
.avanzo-practice-actions{
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  margin-top:18px;
}
.avanzo-practice-actions button:disabled{
  opacity:.58;
  cursor:not-allowed;
}
.avanzo-next-disabled{
  border:0;
}
.avanzo-side-guide .avanzo-notice{
  margin-top:18px;
}

@media (max-width:1100px){
  .training-home-grid{grid-template-columns:1fr !important;}
  .avanzo-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .avanzo-shell{grid-template-columns:1fr;}
  .avanzo-practice-shell{grid-template-columns:1fr;}
  .avanzo-area-tabs{grid-template-columns:repeat(2,minmax(0,1fr));}
  .avanzo-hero-content{grid-template-columns:1fr;}
  .avanzo-status-card{min-width:0;}
}
@media (max-width:640px){
  .avanzo-page{padding:24px 10px 46px;}
  .avanzo-page-head{flex-direction:column;gap:14px;margin-bottom:18px;}
  .avanzo-page-title h1{font-size:2.2rem;}
  .avanzo-head-back{width:100%;min-width:0;margin-top:0;}
  .avanzo-hero{padding:24px 18px;border-radius:24px;}
  .avanzo-grid{grid-template-columns:1fr;}
  .avanzo-mode-card{grid-template-columns:1fr;}
  .avanzo-practice-head{flex-direction:column;}
  .avanzo-area-tabs{grid-template-columns:1fr;padding:14px;}
  .avanzo-question-panel{padding:16px;}
  .avanzo-question-box{min-height:190px;padding:22px;}
  .avanzo-options{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
  .avanzo-disabled-btn{width:100%;}
  .avanzo-panel-head,.avanzo-panel-body{padding:18px;}
}
.training-home-grid .retos-home-card{min-height:340px;padding:30px;}
.training-home-grid .retos-home-card h3{font-size:clamp(1.55rem,2.1vw,2.05rem);}
.training-home-grid .retos-home-card p{font-size:.97rem;line-height:1.62;}
.training-home-grid .retos-home-icon{width:60px;height:60px;border-radius:20px;}
.training-home-grid .retos-home-icon svg{width:30px;height:30px;}
@media (max-width:1100px){
  .training-home-grid .retos-home-card{min-height:300px;}
  .training-home-grid .retos-home-card h3{font-size:clamp(1.7rem,3vw,2.3rem);}
}

/* Entrenamiento Académico - cuarto módulo Robótica Arduino v20260619.23 */
.training-home-section .retos-home-wrap{max-width:1380px;}
.training-home-grid{grid-template-columns:repeat(4,minmax(0,1fr)) !important;gap:22px;}
.retos-home-card.robotica:after{background:rgba(12,95,165,.16);}
.retos-home-card.robotica .retos-home-icon{background:linear-gradient(135deg,var(--reto-blue),var(--reto-blue-2));}
.retos-home-card.robotica .retos-home-btn{background:linear-gradient(135deg,var(--reto-blue),var(--reto-blue-2));}
.retos-home-card.robotica .retos-tags span{background:#f1f6fc;color:#07366b;}
.training-home-grid .retos-home-card{min-height:330px;padding:24px;}
.training-home-grid .retos-home-card h3{font-size:clamp(1.35rem,1.65vw,1.78rem);}
.training-home-grid .retos-home-card p{font-size:.9rem;line-height:1.52;}
.training-home-grid .retos-tags span{font-size:.78rem;padding:7px 10px;}
@media (max-width:1240px){
  .training-home-grid{grid-template-columns:repeat(2,minmax(0,1fr)) !important;}
  .training-home-section .retos-home-wrap{max-width:920px;}
  .training-home-grid .retos-home-card{min-height:310px;}
  .training-home-grid .retos-home-card h3{font-size:clamp(1.6rem,2.8vw,2.15rem);}
}
@media (max-width:720px){
  .training-home-grid{grid-template-columns:1fr !important;}
  .training-home-grid .retos-home-card{min-height:290px;}
}